Thanks Niklas and Ben I tried changing signs on all three coordinates and it is not working.. Whih makes sense now that I think about it because it gives the opposite vector.. in other words it seems to give the vector for the backface of the original polygon... This is coherent with what I see when I look at the object rendered. I still haven't figured out how to make it work.. OF course, following Ben's suggestion of using SetBackFaceNormalFlip does about the same thing.. I keep trying stuff to make it work.. if anyone has any other ideas, please tell me.. Yan Laporte DMI Universit� de Sherbrooke [EMAIL PROTECTED] >From: Niklas Mehner <[EMAIL PROTECTED]> >Reply-To: Discussion list for Java 3D API <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Subject: Re: [JAVA3D] flipping geometry >Date: Tue, 15 Aug 2000 20:28:41 +0200 >MIME-Version: 1.0 >Received: from [204.160.241.38] by hotmail.com (3.2) with ESMTP id >MHotMailBB62D7BB005BD82197E7CCA0F126C9510; Tue Aug 15 11:32:32 2000 >Received: from mail (mail.javasoft.com [204.160.241.28])by >mail2.java.sun.com (8.10.0.Beta13+Sun/8.10.0.Beta13) with ESMTP id >e7FISbA17429;Tue, 15 Aug 2000 11:28:37 -0700 (PDT) >Received: from JAVA.SUN.COM by JAVA.SUN.COM (LISTSERV-TCP/IP release 1.8d) >with spool id 1427793 for [EMAIL PROTECTED]; Tue, 15 >Aug 2000 11:29:31 -0700 >Received: from firebird.fortytwo.uni-oldenburg.de >(firebird.hrz.Uni-Oldenburg.DE [134.106.145.5]) by mail.java.sun.com > (8.10.0.Beta13+Sun/8.10.0.Beta13) with ESMTP id e7FIT9C20202 for > <[EMAIL PROTECTED]>; Tue, 15 Aug 2000 11:29:11 -0700 > (PDT) >Received: from deepspace2 (ip107.fortytwo.uni-oldenburg.de >[134.106.144.107]) by firebird.fortytwo.uni-oldenburg.de >(8.9.3/8.9.3) with ESMTP id UAA10787; Tue, 15 Aug 2000 20:26:38 >+0200 >From [EMAIL PROTECTED] Tue Aug 15 11:36:55 2000 >Priority: normal >X-mailer: Pegasus Mail for Win32 (v3.12c) >Message-ID: <3999A7F9.2948.9169AF@localhost> >Sender: Discussion list for Java 3D API <[EMAIL PROTECTED]> >Comments: To: Yan Laporte <[EMAIL PROTECTED]>, Discussion list >for Java 3D API <[EMAIL PROTECTED]> >In-Reply-To: <[EMAIL PROTECTED]> > >Hi ! > > > I try to change the sign of the x coordinates on the normal vector > > as well (something that made sense to me) and it seems to be working >only > > partialy. >You have to change the sign of all coordinates of the normal vector (or >multiply the >vector by -1). > >Niklas > >=========================================================================== >To unsubscribe, send email to [EMAIL PROTECTED] and include in the body >of the message "signoff JAVA3D-INTEREST". For general help, send email to >[EMAIL PROTECTED] and include in the body of the message "help". ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
